They are a religious group who worship fire to such extremities that they are not overly trusted by other Arceuus mages. However, only they know the spells required to subdue the Wintertodt, so they are heavily relied upon in the defence of Great Kourend.

During the fight against the Wintertodt, they are tasked with channeling the power of the bruma flames from the burning brazier towards the Wintertodt. While doing so, they may become incapacitated, in which the player must use rejuvination potions to heal them. If the braziers are unlit, they cannot be lit until the Pyromancer is healed.